The Trace Anomaly and the Couplings of QED and QCD to Gravity

TL;DR

This paper computes the effective actions for how gravity interacts with abelian and non-abelian gauge theories through the trace anomaly, shedding light on quantum effects in gravitational coupling.

Contribution

It provides explicit calculations of effective actions for gauge theories coupled to gravity via the trace anomaly, advancing understanding of quantum gravitational interactions.

Findings

Derived effective actions for QED and QCD coupled to gravity.

Clarified the role of trace anomaly in gauge-gravity interactions.

Enhanced theoretical framework for quantum gravity effects.

Abstract

We report on the computation of the effective actions describing the interaction of gravity both for an abelian and a non-abelian gauge theory, mediated by the trace anomaly.